.page-contact {
  --pc-gap: clamp(24px, 3.4vw, 40px);
  --pc-line: rgba(76, 101, 119, 0.28);
}

/* ---------- 面包屑与首屏 ---------- */
.page-contact .breadcrumb {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-contact .contact-hero {
  background: var(--paper-100);
  padding: clamp(38px, 5.5vw, 84px) 0 clamp(34px, 5vw, 68px);
  border-bottom: 1px solid var(--hairline-ink);
}

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, var(--fs-64));
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  max-width: 17ch;
}

.page-contact .contact-hero__lead {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--mineral-500);
}

.page-contact .contact-hero__jump {
  margin: 30px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 左右分屏：联系方式 / 工单类型 ---------- */
.page-contact .contact-split {
  background: var(--slate-100);
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-contact .contact-split__inner {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .channel-card {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  border: 1px solid var(--hairline-bronze);
}

.page-contact .channel-card__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}

.page-contact .channel-card__body {
  position: relative;
  padding: clamp(26px, 3.6vw, 46px);
  color: var(--on-dark);
}

.page-contact .channel-card__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--bronze-200);
}

.page-contact .channel-card__title {
  margin: 0 0 26px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3vw, var(--fs-28));
  line-height: 1.25;
  color: var(--paper-100);
}

.page-contact .channel-list {
  margin: 0;
  display: grid;
  gap: 20px;
}

.page-contact .channel-item {
  padding-top: 18px;
  border-top: 1px solid var(--hairline-bronze);
}

.page-contact .channel-item__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--bronze-200);
}

.page-contact .channel-item__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 21px);
  line-height: 1.5;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .channel-item__note {
  margin: 8px 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--on-dark-dim);
}

.page-contact .channel-card__links {
  margin: 28px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: var(--fs-14);
}

.page-contact .channel-card__links a {
  color: var(--bronze-200);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-bronze);
  padding-bottom: 2px;
  align-self: flex-start;
}

.page-contact .channel-card__links a:hover,
.page-contact .channel-card__links a:focus-visible {
  color: var(--paper-100);
  border-bottom-color: var(--bronze-500);
}

/* ---------- 工单类型切换 ---------- */
.page-contact .ticket {
  background: var(--paper-100);
  border: 1px solid var(--slate-600);
  padding: clamp(26px, 3.4vw, 44px);
}

.page-contact .ticket-switch {
  margin-top: 26px;
}

.page-contact .ticket-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-contact .ticket-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ticket-tab {
  display: inline-block;
  padding: 12px 18px;
  border: 1px solid var(--slate-600);
  background: transparent;
  color: var(--ink-700);
  font-size: var(--fs-14);
  line-height: 1;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .ticket-tab:hover {
  border-color: var(--bronze-500);
  color: var(--bronze-700);
}

.page-contact #ticket-consult:checked ~ .ticket-tabs .ticket-tab[for="ticket-consult"],
.page-contact #ticket-tech:checked ~ .ticket-tabs .ticket-tab[for="ticket-tech"],
.page-contact #ticket-partner:checked ~ .ticket-tabs .ticket-tab[for="ticket-partner"] {
  background: var(--veil-glass);
  border-color: var(--bronze-500);
  color: var(--paper-100);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.page-contact #ticket-consult:focus-visible ~ .ticket-tabs .ticket-tab[for="ticket-consult"],
.page-contact #ticket-tech:focus-visible ~ .ticket-tabs .ticket-tab[for="ticket-tech"],
.page-contact #ticket-partner:focus-visible ~ .ticket-tabs .ticket-tab[for="ticket-partner"] {
  outline: 2px solid var(--bronze-500);
  outline-offset: 2px;
}

.page-contact .ticket-panels {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--slate-100);
}

.page-contact .ticket-panel {
  display: none;
}

.page-contact #ticket-consult:checked ~ .ticket-panels .ticket-panel--consult,
.page-contact #ticket-tech:checked ~ .ticket-panels .ticket-panel--tech,
.page-contact #ticket-partner:checked ~ .ticket-panels .ticket-panel--partner {
  display: block;
}

.page-contact .ticket-panel__limit {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 14px;
  font-size: var(--fs-14);
  color: var(--slate-600);
}

.page-contact .ticket-panel__limit .num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 600;
  line-height: 1;
  color: var(--cinnabar-600);
}

.page-contact .ticket-panel__unit {
  font-size: var(--fs-14);
  color: var(--cinnabar-600);
}

.page-contact .ticket-panel__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-22);
  color: var(--ink-900);
}

.page-contact .ticket-panel__text {
  margin: 0 0 16px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink-700);
}

.page-contact .ticket-panel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .ticket-panel__list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mineral-500);
}

.page-contact .ticket-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--bronze-500);
}

.page-contact .ticket-panel__more {
  margin: 18px 0 0;
  font-size: var(--fs-14);
}

.page-contact .ticket-panel__more a {
  color: var(--bronze-700);
}

.page-contact .ticket-note {
  margin: 22px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mineral-500);
}

/* ---------- 自查清单 ---------- */
.page-contact .checklist-section {
  background: var(--paper-100);
  padding: clamp(44px, 6vw, 92px) 0;
}

.page-contact .checklist-grid {
  margin-top: clamp(28px, 4vw, 52px);
  display: grid;
  gap: 24px;
}

.page-contact .check-group {
  padding-top: 18px;
  border-top: 2px solid var(--ink-900);
}

.page-contact .check-group__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--ink-900);
}

.page-contact .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .check-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ink-700);
  cursor: pointer;
}

.page-contact .check-box {
  -webkit-appearance: none;
  appearance: none;
  flex: none;
  position: relative;
  width: 16px;
  height: 16px;
  margin: 4px 0 0;
  border: 1px solid var(--slate-600);
  background: transparent;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .check-box:checked {
  background: var(--bronze-500);
  border-color: var(--bronze-500);
}

.page-contact .check-box:checked::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--ink-900);
}

.page-contact .check-box:focus-visible {
  outline: 2px solid var(--bronze-500);
  outline-offset: 2px;
}

/* ---------- 技术类工单说明 ---------- */
.page-contact .focus-section {
  background: var(--ink-700);
  color: var(--on-dark);
  padding: clamp(44px, 6vw, 92px) 0;
}

.page-contact .focus-section__inner {
  display: grid;
  gap: 32px;
}

.page-contact .focus-section .section-head__num {
  color: var(--bronze-200);
}

.page-contact .focus-section .section-head__title {
  color: var(--paper-100);
}

.page-contact .focus-section__text p {
  margin: 0 0 18px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--on-dark);
  max-width: 62ch;
}

.page-contact .focus-section__text .num {
  font-family: var(--font-mono);
  color: var(--bronze-200);
}

.page-contact .focus-section__links {
  margin: 0;
  font-size: var(--fs-14);
}

.page-contact .focus-section__links a {
  color: var(--bronze-200);
}

.page-contact .focus-section__aside {
  padding: clamp(22px, 3vw, 34px);
  background: var(--veil-glass);
  border: 1px solid var(--hairline-bronze);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.page-contact .focus-section__aside h3 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--paper-100);
}

.page-contact .focus-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: fs;
  display: grid;
  gap: 16px;
}

.page-contact .focus-steps li {
  position: relative;
  padding-left: 36px;
  counter-increment: fs;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--on-dark);
}

.page-contact .focus-steps li::before {
  content: counter(fs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 2px 5px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--bronze-200);
  border: 1px solid var(--hairline-bronze);
}

/* ---------- 合作对接 ---------- */
.page-contact .coop-section {
  background: var(--paper-100);
  padding: clamp(44px, 6vw, 92px) 0;
}

.page-contact .coop-section__inner {
  display: grid;
  gap: 32px;
}

.page-contact .coop-section__head p {
  margin: 0 0 18px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink-700);
  max-width: 60ch;
}

.page-contact .coop-section__head .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cinnabar-600);
}

.page-contact .coop-section__head a {
  color: var(--bronze-700);
  font-size: var(--fs-14);
}

.page-contact .stage-list {
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--hairline-bronze);
}

.page-contact .stage-list__item {
  position: relative;
  padding-bottom: 24px;
}

.page-contact .stage-list__item:last-child {
  padding-bottom: 0;
}

.page-contact .stage-list__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--clay-500);
}

.page-contact .stage-list__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--bronze-700);
}

.page-contact .stage-list__item h3 {
  margin: 5px 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--ink-900);
}

.page-contact .stage-list__item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mineral-500);
}

/* ---------- 资料往来与地址 ---------- */
.page-contact .address-section {
  background: var(--slate-100);
  padding: clamp(40px, 5.5vw, 84px) 0;
}

.page-contact .address-section__inner {
  display: grid;
  gap: 28px;
}

.page-contact .address-section__title {
  margin: 10px 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3vw, var(--fs-28));
  line-height: 1.2;
  color: var(--ink-900);
}

.page-contact .address-section__addr {
  margin: 0 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--bronze-500);
  font-size: var(--fs-18);
  line-height: 1.7;
  color: var(--ink-900);
}

.page-contact .address-section__note {
  margin: 0;
  max-width: 52ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mineral-500);
}

.page-contact .address-section__facts {
  border-top: 1px solid var(--pc-line);
}

.page-contact .address-fact {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .address-fact__key {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--slate-600);
}

.page-contact .address-fact__val {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--ink-900);
  text-align: right;
  word-break: break-word;
}

.page-contact .address-section__link {
  margin: 18px 0 0;
  font-size: var(--fs-14);
}

.page-contact .address-section__link a {
  color: var(--bronze-700);
}

/* ---------- 底部时效时间轴 ---------- */
.page-contact .timeband {
  background: var(--ink-900);
  color: var(--on-dark);
  padding: clamp(44px, 6vw, 96px) 0;
}

.page-contact .timeband .section-head__num {
  color: var(--bronze-200);
}

.page-contact .timeband .section-head__title {
  color: var(--paper-100);
}

.page-contact .timeband .section-head__note {
  color: var(--on-dark-dim);
}

.page-contact .timeband__grid {
  margin-top: clamp(28px, 4vw, 52px);
  display: grid;
  gap: 34px;
}

.page-contact .timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-contact .timeline__node {
  position: relative;
  padding: 0 0 28px 30px;
  border-left: 1px solid var(--hairline-bronze);
}

.page-contact .timeline__node:last-child {
  padding-bottom: 0;
}

.page-contact .timeline__node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cinnabar-600);
}

.page-contact .timeline__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1;
  color: var(--paper-100);
}

.page-contact .timeline__unit {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--bronze-200);
}

.page-contact .timeline__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--paper-100);
}

.page-contact .timeline__desc {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--on-dark-dim);
}

.page-contact .timeband__figure {
  margin: 0;
}

.page-contact .timeband__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--hairline-bronze);
}

.page-contact .timeband .media__caption {
  margin-top: 12px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--on-dark-dim);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 720px) {
  .page-contact .checklist-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }

  .page-contact .check-group:nth-child(2) {
    margin-top: 24px;
  }

  .page-contact .check-group:nth-child(3) {
    margin-top: 48px;
  }
}

@media (min-width: 760px) {
  .page-contact .timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .timeline__node {
    padding: 26px 24px 0 0;
    border-left: 0;
    border-top: 1px solid var(--hairline-bronze);
  }

  .page-contact .timeline__node::before {
    left: 0;
    top: -5px;
  }
}

@media (min-width: 860px) {
  .page-contact .address-section__inner {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-contact .coop-section__inner {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-contact .stage-list {
    margin-top: 24px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split__inner {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-contact .focus-section__inner {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .timeband__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ticket-tab,
  .page-contact .check-box,
  .page-contact .channel-card__links a {
    transition: none;
  }
}